The combination of a very slow moving cold front and copious moisture from the remnants of Tropical Storm Tammy produced heavy rain across Chester County from the early morning into the afternoon of the 8th. Storm totals averaged from three inches in the southeast part of the county to around ten inches in the northwest part of the county and caused widespread poor drainage flooding as well as flooding along most of the creeks and rivers. Many cars were abandoned on flooded roadways. A kayaker was rescued from the Brandywine Creek in East Bradford Township.The Schuylkill River at Pottstown (Montgomery County) was above its 13 foot flood stage from 328 p.m. EDT on the 8th through 336 a.m. EDT on the 9th. It crested at 16.28 feet at 10 p.m. EDT on the 8th. The Valley Creek at Valley Forge was above its 7 foot flood stage from 628 a.m. through 1019 a.m. EDT on the 8th. It crested at 7.66 feet at 830 a.m. EDT on the 8th. The West Branch of the Brandywine Creek at Honey Brook was above its 7 foot flood stage from 754 a.m. EDT on the 8th through 1215 a.m. EDT on the 9th. It crested at 11.0 feet at 415 p.m. EDT on the 8th. Farther downstream at Coatesville, the West Branch of the Brandywine Creek was above its 7 foot flood stage from 2 p.m. EDT on the 8th through 1248 a.m. EDT on the 9th. It crested at 8.69 feet at 730 p.m. EDT on the 8th. Farther downstream, the West Branch of the Brandywine Creek in Modena was above its 9 foot flood stage from 231 p.m. EDT on the 8th through Midnight EDT on the 9th. It crested at 10.38 feet at 8 p.m. EDT on the 8th. Along the East Branch of the Brandywine Creek at Downingtown, the creek was above its 7 foot flood stage from 948 a.m. EDT on the 8th through 152 a.m. EDT on the 9th. It crested at 10.01 feet at 830 p.m. EDT on the 8th. Along the Main Stem of the Brandywine Creek at Chadds Ford, the creek was above its 9 foot flood stage from 315 p.m. EDT on the 8th through 220 p.m. EDT on the 9th. It crested at 12.3 feet at 5 a.m. EDT on the 9th. The Birch Run (West Caln Township) at Wagontown was above its 5 foot flood stage from 5 p.m. EDT through 802 p.m. EDT on the 8th. It crested at 5.28 feet at 7 p.m. EDT.  The French Creek in Phoenixville was above its 8 foot flood stage from 216 p.m. EDT on the 8th through 624 a.m. EDT on the 9th. It crested at 11.06 feet at 9 p.m. EDT on the 8th.Storm totals included 10.56 inches in Honey Brook, 9.50 inches in Coatesville, 7.78 inches in Glenmoore, 7.09 inches in Phoenixville, 6.50 inches in Downingtown, 5.88 inches in West Chester, 5.76 inches in Modena,  4.96 inches in London Grove, 4.55 inches in Exton and 3.40 inches in Longwood Gardens. This heavy rain helped the state of Pennsylvania have its second wettest October on record dating back to 1895. The statewide average precipitation total was 6.49 inches, 3.31 inches wetter than normal. Only 1976 (6.59 inches) was wetter. October 2005 was the wettest October on record at the Philadelphia International Airport with a precipitation total of 8.68 inches, 5.93 inches wetter than normal and surpassed the previous record by 2.02 inches.The cold front moved from near Pittsburgh, Pennsylvania at 8 p.m. EDT on the 7th, to the Susquehanna Valley in Pennsylvania at 2 a.m. EDT on the 8th, to the Poconos and Berks County in Pennsylvania and just west of Chesapeake Bay in Maryland at 8 a.m. EDT on the 8th. The cold front stalled as waves of low pressure road northeast along it. At 2 p.m. EDT on the 8th, the cold front just edged into northwestern New Jersey and the Philadelphia northwest suburbs and was still west of Chesapeake Bay in Maryland. At 8 p.m. EDT that evening the cold front barely moved into the Philadelphia New Jersey suburbs and the Delmarva Peninsula. The cold front and waves of low pressure cleared the Delaware and New Jersey coasts between Midnight EDT and 2 a.m. EDT on the 9th. The slow movement and stalling coupled with an unstable air mass and tropical moisture associated with Tammy helped enhance the torrential downpours. The flooding would have been even worse if not for the unseasonably dry weather that preceded this event from the middle of August.

Flash Flood in CHESTER, PENNSYLVANIA
From 08-OCT-05 05:28:00 to 08-OCT-05 10:00:00 (EST)
Location: COUNTYWIDE
Reported by: AWOS,ASOS,MESONET,ETC

Flood in CHESTER, PENNSYLVANIA
From 08-OCT-05 10:00:00 to 09-OCT-05 13:20:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC